Hydraulic rotary drilling-machine.



INE.

Patented Dec. 15, 1914.

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APPLICATION FILED MAB..19,,1914.

Patented Dec. 15, 1914.

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E. E. GRB\/ 1;. HYDRAULIC ROTARY DRILLING MACHINE.

APPLICATION FILED 1.1AR.19, 1914.

1 1531 35 1 Patented Dec. 15, 1914.

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"ii-sire earns PENNSYLVANIA. ASSIGNOR TO OIL WELL SUPPLY EDGAR E. GREVE, OF PITTSBURGH,

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HYDRAULIC ROTARY DRILLING-MACHINE.

Specification of Letters Patent.

Patented Dec. 15, 19

Application filed March 19, 1914. Serial No. 825,874.

To all whom it may concern Be it known that I, EDGAR E. Gnnvn a citizen of the United,.tates residing at \littsburgh, in the county of Allegheny and State of Pennsylvania, have invented oer tain new and useful lmplrovements in Hydraulic Rotary Drilling-l achines; and I do hereby declare the following to be a full, clear, and exact desciiptionigf the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to that class of de vices employed in drilling oil or Artesian wells, commonly termed hydraulic rotary drilling machines, wherein the drill is connected with the drill-stem through the intermediacy of a string of tubing, to which, :as the drilling advances, sections of tubing are added from-time to time until the string frequently acquires great length and weight.

Broadly considered these machines all include, in combination, a rotary table or turntable, and means for imparting the rotation of the table to a drill-stem.

The meansfor imparting the rotation to the drill stem, generally stated, may be classified under two heads, viz., those adapted for use with a round drill stem, or one having a circular cross section, and those which are adapted for use with a drill-stem of non-circular cross section. Of these the former necessarily bite on the stem and are objectionable not only as tending to indent and'impair the drill-stem, but also as calculated to interfere with the proper feed and jumping of the drill; therefore the latter, or those wherein the means for engaging the the configuration of and permit an unimpeded feed and jumping of the drill, are deemed preferable.

My invention relates more particularly to this latter class of rotary drilling machines, and has for its principal object the simplification and protection .of the combining elements whereby effectiveness and durability of the machine is enhanced, repair facilitated, and the labor of the operator, reduced. A

To this end one feature of my invention embraces a rotary table formed of a plurality of superposed sections the overlying parts being provided-with centrall disposed and vertically alined'openings r the- Figure 1 is a passage of a drill stem and with interlock: ing parts, whereby there is obtained, without loss of strength in the machine, a rotary table wherein the refitting and replacement of parts subject to the greatest wear and strain may be effected at moderate cost, and with comparatively little labor.

A second feature of my invention embraces the combination with a rotary table having suitable slide chambers, of radially .disposed horizontally movable slides having drill-stern engaging surfaces adapted to coincide with a portion of the external surface of a non-circular drillstem, and means for locking the slides in fixed relation to each other and t0 the drill-stem, whereby is obtained a machine which can be readily adapted to use with noncirgilar drill-stemsof different cross sections! cross sectional area.

A further featurelof my intention embraces the combination with a rotary table and difierent of means for communicating the motion ofv the table to a drill-stem, and a cover for protecting said means and the rotary table from mud, &c., whereby the operator is provided with a secure footing on the rotary table, obstructions on the top of the table are eliminated, and handling of the drill-stem and strings facilitated.

There are other, minor, features of invention involving elemental construction, and particular combinations of elements, all as will hereinafter more fully appear.

In the drawings chosen for the purpose of illustratin my invention, the scope whereof will e pointed out in the claims,

rotary drillin machine embodying my 111-. vention, showing also, in elevation, a portion of a noncircular drill-stem adapted to be rotated by my machine. Fig. 2 is a view in elevation of a rotary table embodying my invention, the lower portion of the table being broken away. Fig. 3 is a top or plan view of the table embodying my invention, showing, in position, the slides that engage the drill stem; a noncircular drill stem in cross-section in operative position in the machine, and a portion of the cover which protects the slides from mud, &c., and facilitates handling of the drill-stem and string.

Fig. 4 is a top or plan view of the upper section of arotary table embodying my in vertical central section of a vention, parts broken out to show the bot-- tom section of the table, the cover and the slides which engage the drill-stem being removed. Fig. 5 is a vertical sectional view of a table and cover embodying. my-inven-f tion, part of the lower section of the table broken away, taken in the plane of the line 55, Fig. 3, looking in the direction of the arrows. Fig. 6 is a detached plan view of a roller bearing for the rotary table. Fig. 7 is a side elevation of the roller bearing shown in Fig. 6. Fig. 8 is a view in cross section of a modified form of non-circular drill-stem, and a plan view of the ends of slides adapted to rotate said modified form of drill stem. Fig. 9 is a view of a lever which may be used for moving the slides into and out of engagement with the drillstem.

Like symbols refer to like parts wherever they occur.

I will now proceed to describe my invention more fully so that others skilled in the art to which it .appertains may apply the same.

In the drawings, 1 indicates suitable skids or sills for the support of the bed-plate 2 of a rotary table 3, and also the pillow blocks 4 on which the driving shaft 5 of the table is journaled.

The bed-plate 2 has the usual central or axial, opening 2 for the passage of a drillstem, and through this opening, in this in stance, there also extends a pendant annular flange 3* which forms part of the rotary table c The bed-plate 2 has an annular raceway 2 for the reception of the roller bearings of the rotary table, and in said raceway 2 is a removable race-plate 2 over which the roller bearings travel.

The rotary table 3 is preferably comprised of two sections A and B and a cover for the upper section B, all of said members having the usual axial opening for the passage of a drill-stem.

The lower section A of the rotary table is provided with an annular raceway 3" corresponding with the raceway 2 ofthe bed plate 2 r the reception of the roller. bearings on which the rotary table 3 travels, and in said raceway is an upper removable raceplate 3 corresponding with the lower-raceplate 2. These race-plates 2 and 3 can be replaced to eliminate wear and lost motion, when required.

Section A of the table is provided with an overhang on theunder surface of which is an annular rack 6 with which a pinion 7 0n the driving shaft 5 engages, and said section is also provided with a skirt or pendant annular flange 3 which extends down through the central opening 2 of bed-plate 2 to a point below the bed-plate where it is provided with a peripheral collar 8 bolted or thrust of the driving-shaft 5, or of the vibration of the drilling string.

The driving-shaft 5 is provided with the usual sprocket wheel 9 for communicating power to shaft 5, said sprocket wheel being loose on shaft 5, and it is also provided with a shifting clutchlO splined to the shaft for coupling and uncoupling the driving shaft and sprocket wheel.

Located in the race-wa s 2 and 3 and interposed between bed-p ate 2 and rotarytable 3 are the bearing rollers on which the rotary-table 3 travels.

The bearing as a whole is comprised of a series of taperin or cone-shaped rollers 11 and 12 of two iflerent sizes or diameters having their axes in a common plane, the larger rolls 11 constituting the bearing rollers proper and the intermediate rollers 12 constituting antifriction spacing rollers, the bolts 13 and 14 constituting the axes of the rolls having their bearings in the concentric rings 15 and 16. of the rotary table is provided at diametrically opposite points with upwardly projecting lugs 17 (see F igs.,3, 4: and 5), said lugs being perforated for the passage of keys 18 whereby the upper section B is secured to the lower section A of the table, and it is also provided with diametrically extending channels 19' (see Figs. 2 and 4:) which receive ribs similarly disposed on the under surface of the upper section B of the table.

B indicates the upper section of the table which is perforated at diametrically o posite'points, as at 20, forthe passage 0 the lugs 17 on the upper surface of lower section A of the table, and it is also provided on its under surface with diametrically extending ribs 21 (see Fig. 2) which ribs, when section B is in proper position on section A, enter the channels 19 in the upper surface of section A. The interlocking ribs and channels, lugs and keys above noted form an efficient connection between the sections A and B, and maintain the parts in proper and operative relation under all the strains and shocks incident to. the use of the machine.

The upper surface of section B of the table has a series of converging or radially disposed vertical walls 22 connected by arcshaped vertical walls or flanges23 (see Figs. 4.- and 5) which divide the upper surface of the top into a series of segmental recesses or chambers having the outlines of truncated wedges. 1

The bottoms of certain of said oppositely disposed recesses or chambers 24 are slotted as at 20 for the passage of the slotted lugs or he upper surface of the lower section A Ill projections 17. on the upper surface of lower section A of the table, while the remaining oppositely disposed recesses or chambers 25 constitute slide chambers open-toward the axis of the table for the reception lot the horizontally movable slides 26 which engage the.drill-stem S and said chambers "25 have diametrically extending channels 27 for the reception of longitudinally disposed guide ribs 28 (see Figs. 2 and on the under surface of said slides 26.

26 indicates slides having the form ,of truncated wedges, as have also the recesses or chambers 25 on the upper face of section 3 of the table, and said slides are movable therein on radial lines .to and from the axis of the table. They are providedon their under surtaoes with longitudinally disposed guide ribs '28 which enter the-radially disposed slotsil? in the bottomof said recessesor chambers 25 to insure the proper movement of the slidesin the slide chambers. In order to provide a-simple and effective means for moving the slides 26 radially .of the table to and from its axis of rotation 1 provide on the upper surface of the slide a radially disposed slot 26. crossed by a bolt :26 adapted to be engaged by the lower end of a lever 30 having its fulcrum on the .coveinof the table. The

function of slides 26 is to transmit the rotary motion of the table 3 to a drill-stem of non-circular cross-section, and for this purpose the inner or axial ends of the slides are given a shape to coincide with a portion of the peripheral surface of the drill-stem to be used. Means are also provided, as

'for instance pins 29, or their equivalents, to

lock the slides 26 in position when the inner ends of the slides engage the drill stem S. When in such position, owing to the Wedge form of the slides and of the slide chambers, the slides will have an extended bearing on the walls of the slide chambers and a perfect support on the rotary table.

In the principal figures of the drawing the inner ends of the slides have been shown as having a T-slot 26, the stem of the T being on a radial line of the table, because the noircircular drill-stem S chosen for purposes of illustration in the principal figures of the drawing is of'circular crosssection with diametrically disposed ribs or feathers s, s, but it will be noted that in the modification shown in Fig. 8 of the drawing the inner ends 26 of the slides, which are intended to engage a. drill-stem of rectangular cross-section, are of Y-shape, or are divergent, and from the foregoing illustration it will be evident that the builder machine can, without further invention. readily form the inner end of the slide to .oincide with the cross-section of any non-circular stem he shall elect to use. Slides having drill stem engaging ends of one form canilieadiiyabe substituted for those having another form of drill-stem engaging surfaces.

31 indicates the cover of the upper sec tion. of :the rotary table. This cover is in the form of an annular plate which provides-a central opening for the drill-stem, and-at the same time ail'ords ample protection to the slides 26 or drill-stem engaging. devices against mud, &c., during the operation of the machine, and also eliminates all projections from the top of the table, thus atl'ording the operator a safe footing onthe top of the table which facilitates the handling of the drill-stem and string when required.

In cover 31 at diametrically opposite points and adapted to register with slots 26 in the slides 26, are slots 31 for the passage of a lever whereby the slides 26 are oper ated, and on opposite sides of slots 31 are lugsifdl" throu h which pass bolts .31 to form .fulcrums 5n the lever which moves the slides. The cover 31 maybe secured to the rotary table by set screws 31 (see Figs. 2 and 3), or in other suitable manner. In

Fig.--9 of thedrawing a lever 30 adapted for this purpose is shown, and its application to the slide andcover'for moving the slide is shown in dotted lines Fig. 1 of the drawings. The sections A and B comprising the rotaryi table are readily assembled by placing the section B on section A with the lugs 17 of section A. passing through the slots-20 in thebottom of section B, and with the ribs 21 of section B in the channels 19 on the upper surface of section A, after which the keys 18 are passed through the slots in lugs 17, and cross pins 18 may be passed through the eyes in keys 18, if desired. The parts comprising the rotary table having been thus assembled and secured, the remaining coacting elements of the machine 7 will be assembled, and will coact in the usual manner.

Having thus described my invention, What I claim and desire to secure by Letters Pat ent is:

1. In a'rotary drillin machine, the combination of a rotary ta le comprised of a plurality of superposed sections the overlymg parts being provided with centrally dis posed and vertically alined openings for the passage of a drill-stem, said sections having interlocking parts means for connecting the several sections of the table, and means for g imparting rotary motion to the table.

2. In a rotary drilling machine, the combination of a. table comprised of a plurality of superposed sections the overlying parts being provided with centrally disposed vertically alined openings for the passage of a drill stem and with interlocking radially disposed ribs and channels, means for detachably connecting said sections, and means for rotating the table.

3. In a rotary drilling machine, the combination of a rotary table comprised of separable sections, one of said sections having slide chambers, slides having means for engaging a non-circular drill-stem, means for securing the slides in the slide chambers, and means for rotating the table.

4:. In a rotary drilling machine, the combination of a rotary table comprised of separable sections, one of said sections having oppositely disposed slide chambers, slides having ends adapted to engage a noncircular drill-stem, means formaintaining said slides in fixed relation to each other and to the rotary table, and means for imparting a rotary movement to said table.

5. In a rotary drilling machine, the combination of a rotary table comprised of separable sections, one of said sections having oppositely disposed slide chambers, slides having ends adapted to engage a non-' circular drill stem, means for maintaining said slides in fixed relation to each other and to the rotary table, and a cover for the slide chambers of the slide section of the rotary table. 7

6. In a rotary drillin machine, the combination of a rotary taile, means mounted thereon for engaging a drill-stem and trans mitting the movement of the table thereto, a cover for the table and for the means for engaging the drill-stem, said cover mounted on the table and means for imparting a r0- tary movement to the table.

7. In a rotary drilling machine the combination of a table havingsuperposed separable sections provided With slotted lug and key connections, means on the table for transmitting the motion of the table to a drill-stem, and meansfor imparting a rotary movement to the table.

8. In a rotary drilling machine, the combination of a rotary table having oppositely disposed slide chambers, said slide chambers havingconverging side Walls, and slides nesses.

EDGAR E. GREVE. Witnesses:

ALBION C. OGKENDEN, SAMUEL E. SWARTZ. 

